Inner-conduit suspension



June 1930- A. w. LISSAUER 1,761,084

INNER CONDUIT SUSPENS ION- Filed Dec. 22, 1928 33, flum W Patented June 3, 1930 UNITED STATES PATENT orrlcs ADOLPH w. HBSAUER, OI LOUISVILLE, KENTUCKY, ABSIGNOB 1'0 LOUISVILLE DRY- ING MACHINERY CO. INC., OI JEFFERSON COUNTY, KENTUCKY mama-coupon susrnusron Application filed December 22, 1888. Serial No. 827,851.

My invention relates to means for. properliy suspending inner conduits from outer conits, and has referencemore particularly to the suspension of the inner shell of a dryer from the outer shell of the same.

by means of bolts which pass through the clips and the links. Theoretically, this is a simple method of handling the problem, but in actual practice there are a number of difficulties.

In the first place, in as inaccurate a machine as a dryer it is im ossible to get perfect cir cular shells or con duits so that the length of the links and the exact osition of the clips cannot be'determined be orehand but must e fitted by the cut and try method.

In the second place the uneven expansion under heat of the conduits tends to throw the links out of their original position. This means that the links which are originally installed as the vertical components of a right angle triangle, must form the hypotenuse of the right angle trian 1e. Under this condi-' tion, of course, somet ng must 've way, and it is usually either the bolt or t e hole in the link.

This condition could not be overcome by setting the links at the proper angles because when the conduits are cold, the reverse would be true and the links would then be too long. As soon as any wear or deterioration due to the above condition exists, then with'every revolution of the dryer, the lost motion comes into play and the condition becomes worse. It is not unusual for users to have a shut down on dryers of this kind every six months, at a great expense and loss of time, as they have to replace both the links and the clips.- Of course, the difiiculty in changing these hangers is made greater because of the flights provided on the facing surface of the inner and outer conduits or shells, which reduce the working space therebetween considerably.

To obviate these defects, I provide a sus-' pension which permits a lateral and longitudinal displacement between the two shells,

wthout strainin the suspension or shells.

In the appen ed drawing, forming part of this application, Figure 1 is a cross section on line 11, Figure 2, of an inner and outer conduit or shells of a dryer provided with a suspension embodyng my invention.

Figure 2 1s a longltudinal section on line 22, Figure '1, and

Figure 3 is a longitudinal section on line 333, Figure 1.

Referring to the drawings, the inner shell or conduit 5. at the points where it is to be supported, is provided with an'annular channe led ring 6 secured thereto in any suitable way. The channelled ortion, which is exterior to the inner shall, orms a guide for a plurality of U shaped hangers 7, each straddling the rin and t ends 0 each U han er is threaded and each gether t ey completely embrace the inner shell and they are so anchored to the outer shell that the strain of all the hangers on the outer shell is substantially uniform. Where the concentricity between the shells is to be properly maintained, a series of three hangers are carried and guided by the ring 6 and Figure 1 illustrates such an arrangement, the missing, U hanger bein indicated in dash and dot line. But it is ac f-evident that more orfewer U hangers may be used for special cases.

of the U hangers erefore the inner shell. The I The threaded ends of the hangers engaged by the arched plates 8 are accessible through 0 enings 12, provided in the outer shell, so. t at the U hangers can be: properly adjusted at anytime, the openings 12 of the 01113613 shell being provided with suitable covers in the hangers, so that there will be no strain on any part of the same. It will be also seen that these hangers, disposed in a manner as described, will permit both lateral and longitudinal displacement, without materially straining any part of the suspension or the shells.

It will also be seen that the resultant pull or support of any of the U hangers is at an angle to the pull or support of any of the other U hangers, although the resultant pull or support of all the hangers is substantially zero.

I claim- 1 1. A suspension for an inner shell from an outer shell of a dryer, comprising a series of U hangers, each straddling the inner shell and yieldin means securing the ends of the hangers to t e outer shell, the pluralit of said hangers completely embracing t e inner shell.

2. A suspension for an inner shell from an outer shell of a dryer comprisin a plurality of U hangers, each straddling tie inner shell at difierent parts of its circumference, and yielding means connecting the said U hangers to t e outer shell.

3. A suspension for an inner shell from an outer shell of a dryer comprising a chancfiripg the ends of the hangers to the outer s e 7. A suspension for an inner shell ftom an outer shell of a dryer, comprising a series of U hangers, each straddling the inner shell, a yielding plate at the end 0 each U hanger, anchored at one end to the outer shell, and free at the other end from said shell but supported from same.

8. A suspension for an inner shell from an outer shell of a dryer, comprising a series of U hangers, each straddling the inner shell, and a yielding plate at the end of each U hanger, supported b the outer shell on the inner surface thero ADOLPH W. LISSAUER.

nelled ring secured to the inner shell, :1 lurality of U shaped hangers, each stradd ing the ring ata different part of its circumference and each lyingxin a plane substantially at right angles to t e axis of the shells, and ieldmg means on the inner surface of the outer shell engagin the ends of the hangers.

4. A suspension or an inner shell from an outer shell of a dryer comprising a channelled ringlsecuredto the inner shell, a plurality of U s aped hangers, each straddling the rin at a difierent part of its circumference, an means connecting yieldingly the ends of the U hangers to the inner surface of the outer shell.

5. A suspension for an inner shell from an outer shell, comprisin a channelled ring secured to the inner shell, a plurality of U shaped hangers, each straddling the ring at a diii'erent part of its circumference, and for which said hangers said rin forms a guide, a yielding plate at the end 0 each U hanger, and means secured to the outer shell and supporting each plate, so that one end of said plate is anchored.

6. A suspension for an inner shell from an outer shell of a dr er, comprising a series of adjacently dis ose U hangers, each strad-. dling the inner s all so that each hanger lies in a plane substantially at right angles to the axis of the shells, and yielding .means for se- 

